<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"> 
<title>css3基础</title> 
<style> 

div
{
	width:200px;
	height:100px;
	border:2px solid green;
    background-image:url('square.png'), url('paper.png');
    background-repeat: no-repeat, repeat;
}

</style>
</head>
<body>
<div>显示在2幅背景上面</div>

</body>
</html>